<!DOCTYPE html>

<html xmlns:th="https://www.thymeleaf.org" th:replace="~{fragments/layout :: layout (~{::body},'error')}">

<body>
  <img src="../static/resources/images/pets.png" th:src="@{/resources/images/pets.png}" />
  <h2 th:text="#{somethingHappened}">Something happened...</h2>
  <p th:text="${message}">Exception message</p>
</body>

</html>